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Crop Science Abstract -

Productivity and Quality Responses of Red Clover (Trifolium pratense L.) Infected with Bean Yellow Mosaic Virus1


This article in CS

  1. Vol. 11 No. 2, p. 272-274
    Received: Sept 22, 1970

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  1. R. R. Smith and
  2. Douglas P. Maxwell2



The effect of bean yellow mosaic virus on the productivity, in vitro digestibility, and nitrogen and chlorophyll concentrations was examined using susceptible red clover clones from two varieties. The virus had no effect on the digestibility of the plants, but it did cause an increase in nitrogen concentration and a decrease in chlorophyll concentration and forage yield. Digestibility estimates obtained on healthy plants were associated positively with nitrogen concentration (r=.50), leaflet-to-stem dry matter (r=.50), and leaf dry matter percentage (r=.35), and were associated negatively with shoot height (r=−.54) and stem dry matter percentage (r=−.30). Digestibility of the virus-infected plants was not associated with any agronomic or chemical attribute.

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